sweitzer



S. K. SWEI'TZER.

WRENCH.

APPLICATION FILED luuizs, 1591s.

1,13 1 1 ,724. manned July 29, 1919.

2 SHEETS-SMEET L s. K. swf-HIER.

wnENcH. APPucMmLmED umg-29. ma.'

1,3 1 1 ,724. Patented July 2 9, 1919.

2 sums-suing'.

vented new and 4useful 'Wrenches,

residing at New Freedom,

4entras PATENT oFFioE.

'smi-JEL K. swEITzEn, or NEW'FaEEpoM, PENNSYLVANIA.

WRENCH.

' from the other jaw at the movement of the i of a ratchet, with the handle in one direction, 'the movement of the handlel inthe otherdirection, however, serving tolock the movable jaw so that relative movementv between the two is prevented. Such .a construction as this provides for the engagement with a nut or the head of aI bolt when the wrench is moved in one direction, but provides for the release of the nut or -bolt head by the jaws when the wrench is moved in the opposite direction. Thus there is obtained all of the advantages additional advantage that the jaws are assured of firmly clamping the nut or bolt head when the wrench is being used to move the nut or bolt head in the desired direction. j i

A further purpose of the invention rests in the provislon of a device of this character in which the construction' is comparatively simple, the parts for obtaining the desired results few and the cost of manufa'c` ture low.

Other and further purposes appear in the following description wherein the inventionl -is set forth in detail.

To the exact construction'in which it is shown and described, thel invention. is Inot to be restricted. The right is reserved to make such changes or alterations as thel actual reduction to practice may suggest, Vin so far as such changes nr alterations are compatible with the spirit of theannexed claims.

The same numerals of reference designate the same parts throughout the severalgures rt' the drawings, wherein:

Figure 1 is aview inside elevation of the improved wrench.

Fig. 2 is an edge elevation.-

Fig. 3 is a. section on `the line 3--3 of Fig. 1.

Fig..4 is a section'on the line 4 4 of Fig. 2. j

Specication of Letters Patent.l Application ined .rune 29 191s. semina. 242,651.

that the Patented J uly29, 1919.

Fig. 5 is a perspective view of the movable Jaw. y F F ig. 6 is a section on the line 6-.6' of 1g. Fig 7 is a section-n the line 7-7- of Fig. 4. l

As illustrated, the invention comprises a hollow body member l permanently closed on one side and closed on the' other side by the movable plate 2,.,the'body member simulating a rectangular parallelepiped'in shape.

two longitudinal partition -members 3 and 3a which define guide-ways 4 and 5' adjacent either edge of the body member. These guide-ways are square in cross-section for a 'portion of their length and round for the remainder of their length. The guide-way. 5 receives for sliding ,engagement therein the leg 6 of the stationary l jaw 7, the latter and its leg 6 together vormlng an Ljshaped member,as shown. The leg 6 of the jaw member 7 `is square in cross-section, so that it may be precluded from angular movement with respect to the body member 1. From a specified point in its length, however, to its free end, the leg 6 is formed 'with the reduced threaded portion 8 and on this thread- "ed portionl 8 the knurled or milled nut 9.

At a specified distance from either edge wall, the body member 1 is formed with than rotary movement and `rotaryv movement imparted'to the nut will obviously effect longitudinal movement 4of the threaded portion 8 and the leg 6 with respect to the body portion 1. This for the evident purpose of-providing an adjustable means :for thejaw7. g Y

The guide-way 5 is `formed so as tothe. open at both j j body portion 1,but the latter is so 'formed guide-way 4 will be closed'gaty'the bottom.

In this guide-way 4 there is carriedamor;

able T-shaped jaw element which comprises lthe jaw I square in cross-section so that it may slidguide-way 4 but be-seg4 proper' 11 formed with aY legi'lQ ingly lengage in the `Cured against angular movementutherein,

the top and bottom endsfthe 'The leg 12 .terminatesfin'f a reduced .portion 14 circular 'inv crosssection and this latter isg-surrounded by a spiral spring 1 5' whose on'e end bears' against the bottom of the guide-way 4 and whose other end bears uponthe shoulder forme'dat the juncture-of 'the leg 12 with its. reduced portion 121. lfObJ viously the 'jaw\'. mayb'e -moved 1n one d1-.

rection 'by the action of `the spring 1 5and inthe other direction by the application' of Y a force 'in oppositionto the'spri'ng 15. To'

limit these -two movements-to prescribed points,5slot's' 1\6 and '17 are formed 'in the Iside wall'of'th'e body portion land inthe j 4a'l'li'enefnt s'o that' they may 'receive the -pinplatelf respectively,.thesefslots being in "18" i n s'e` rted transversely' through the leg t th ' tively related to the ovable jaw 1-1.. 'The' mpvexnents-above referred to.

the plate v'2 define acompa'rtment 19 which is closed atfthe at the bottom en of the body portion. This vcompartment 19 houses devices 'coperaf '30 legA 12 o the latter jaw is recessed at the side i provided with an'. arm "22a designed to lie edgesurfaceQ against whichA the nose 26 of the' handle 27 may engage. The handle 27 is pivotally mounted on a Stud 2 8 while a against the diagonally disposed side 20.-'

This toothed sector 22 meshes with a similar t sector 23pivotally mounted on a pin 29l and 1 having-a depending arm'24 of gradually in? creasing width'which becomes greatest at thefree. end, 'thus providing an "inclined flat spring 29 attached tothe partition member 3bears on'the' handle and tends' to-keep` its nose `26 firmly engagedwith the inclined l edge 25 ofthe arm 24.- Obviously. lthis ser'ves tokeep the-arm 22a in engagement with Ithe .inclined side 20 ofthe Ileg 12,`th usprevent-f ing the jaw 11' from being moved away from" the jawl 7 on the application of'a force upon z the former. When the jaw 11 ,standsjin 1 -that the pin 18 engages'the upper ends of.

such a position 'relative tothe body'member 'the slots 1.6 and 17, the`p'ositions vof the arms =22a and 2,4 are' such' that the nose26 of the handle 27 bears against the inclined edge 25 at a point s'hg'htly above an imaginary line...

152 -a11d.;projecting laterally from either side' e o f ,'ft he lateral projectingends'of the'pm Illing the -tops and Athe bottomsbfv the adore'said'slotsI to limit in the jaw'll 4 the u(pper endibiltwhich is open' edges-of the b ody portion' 1. i

vdrawn Athrough the center'olf'the .stud28- in Aa plane parallel tothe upper and 'lower In the lise' of the' device, when-the vmov- @able jaw 7 :is in the position'juststa'ted, the

stationary jaw 7 iesadjusted relativey to this movable jaw so'as to suit the -nut'or bolt to be operated upon.' .'Ihe wrench. is' then so.

v positioned on the -nut or bolt that'when' the latter is trned 'in the desired direction; the

pressure 'exerted jon the handle 2 7V for move'-` :mentof'the' nut in this desired directionwill coperate with 'the spring. 29 to '.keep'- the" nose and with it the arms'24: and`22- such positions'as #to preclude' any 'downward thereof relative to the jaw 7..' iWhen it is de sired, after havingmoved' the nut and the wrenchthrough a specified angular distance,

sure exerted on thefhandle 27 isfcf course,

, reversed,with the 'result that. the nose 26 moved out of irin engagement with the in- -cli'ned edge 25,'wheny th'e wrench as -a' whole-A4 may be ymoved in a' reversed direction as re spects the movement being imparted to the nut, the-movable j aw 11 movingiaway .from

"the" jaw 7 to el'e'et 'passing'around thecorf ners of the nut. Since'the nose 26A is 'moved outof lfirm engagement with the inclined 'edge 25, this movement `of' the jaw 11 is. pos- Isible, since the pressure exerted on top of' the jaw istransferred in turn to e arm 22 and from the latter 'through the toothed sec-- tors 22and 23 to the arm 24' which later ofcofurseiis moved toward the nose 26, ,f

-From the accompanying drawings and the foregomg description', it is. believed that "a clear enough understanding o f. the inventionis'to be had,- and -a further description iS, therefore, omitted.

"The invention having' been described,

-what'is'claimed as new andnseful is:v

1. A wrench of the class described comprising abody portion l formed witha guide-5' lield normally stationary y-relative the reto,'a` movable jaw cooperating 'with' the first; said jaw, the said movable jaw being Vformed' with aleg slidingly engaging the said guidemounted in the body portion, the one being with'an arm of'increased Wid'th at its free end'to provide-an inclined side'edge, a handle pivotally mounted in the body portion and" having' a nose lengaging the said in' chned edge of the last said-ar and a spring carried by the body porti n and bearing upon the handle to keep .the nose thereof normally in suchengagement.

,way, intermeshing toothed sectorsv pivotally formed 'with an'arm, theleg of the movable 'jaw being recessed to provide an' inclined edge with .which the s'aid-l arm may engage,V

- the other of the toothed sectorsl being formed "2. A wrench of the class described com- 130 away, a )aw carried by the body portion and. f

prisiiig e' portion, -a relativel stanetted. with the-han'dle and the other with 10 tloliar jawrearried thereby, 'it movabe jaw theilnovable jaw, whereby the exercise of carri .by the'body potlonfand coacting pres'js'11e-o'f`-the handle dn one directionmayv y. Withltheirst named jaw, thejsaid movable `serve,izoflook the jaw While pressurey on the jafw beingformed with a legA slidaLbly em" 4handle ,in-a, reverse direction releeses the gaging' the body portion, a handle pivotallyf jaw'frthe purpose.specified.l 15

onnec'ted with the body portion, and a. pair In testimony `whereof he afiixes his signe.-

of 'inteimeshiyng tooth sectors carried in the ture.

bgdy pb.t0n,.th one being operatively con- 4SAMUEL K. SWEITZER. 

